Chock-block for logging-trucks



(No Model.)

W. H. GARLOGK. SHOCK. BLOCK FOR LOGGING TRUCKS.

Patented Mar. 25, 1890. 7'

UNITED STATES 3 PATENT OFFICE.

VILLIAM HENRY GARLOCK, OF SEATTLE, WVASHINGTON.

CHOCK-BLOCK FOR LOGGING-TRUCKS.

SPECIFIGATIQN forming part of Letters Patent No. 424,287, dated March25, 1890.

Application filed December 23, 1889. Serial No. 334,649. (No model.)

T0 0% whom, it may concern:

Be it known that 1, WILLIAM HENRY GAR- LOCK, a citizen of the UnitedStates, and a resident of Seattle, in the county of King and State of\Vashington, have invented certain new anduseful Improvements in Chock-Blocks for Logging-Trucks; and I do declare the following to be a full,clear, and exact d escription of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

Figure 1 is a perspective view. Fig. 2 is a front elevation, and Fig. 3is a detail view.

This invention relates to certain. improvements in chock-blocks forlogging-trucks; and it consists of the novel combination andconstruction of parts, as will fully appear from the followingdescription and accompanying illustration.

In carrying out my invention I employ a base-plate A, having at shortintervals apart stops 1), and which is adapted to rest upon the bolsterB of the truck, and, also, which is formed or cast with drop-lugs A,having inward upturned lower ends a, which engage the bottom edges ofthe bolster. under side of the base-plate A depend short, stout,parallel projections or studs Z), which engage the inner sides of theupper edges of the bolster B, and thus prevent lateral displacement ofthe base-plate A. Upon the upper side or surface of the plate A is castthe block or chock O proper, which has an upper convex or inclinedsurface sloping from its outer perpendicular edge inward, with its lowertapering end atthe base-plate, which convex or inclinedsurfaceis'presented, toward and against which rests the log on the truckin transit. The chock or block 0 is connected or chained, as at d, tothe truckbolster on the under side, keeping the chock or block always athand.

D is a dog pivoted at one end, preferably by a tubular boss 6 integraltherewith, to the upper side of the base-plate A, near one side edge,said boss receiving a pivot or projection e, extending from an elevationon. the base plate.

From the The dog D is adapted, as clearly shown, to stand between theupper side edges of the bolster B and upon the depressed surface ofbolster and against an adjacent stop of said surface, thus preventingendwise displacement of the chock or block by the pressure of the logthereon.

In order to lock or secure the dog D from accidental upwarddisplacement, I provide a latch D, which is similarly pivoted at itsupper end to the perpendicular edge or end of the block or check D andadapted to engage at its lower end the upper edge of the dog.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

1. The chock-block for logging-trucks, having the dog, in combinationwith the loggingtruck bolster having stops engaged by said dog at itslower edge, substantially as described.

2. In a chock-block for loggingtrucks, the combination, with the bolsterof the loggingtruck, of the dog pivoted to the chock or block andengaging or fitting between the inner side edges of the bolster,substantially as specified.

8. In a chock-block for logging-trucks, the combination, with thebolster of the truck having a series of stops, of the dog engaging saidstops and the latch engaging said dog, substantially as specified.

4. The combination, with the logging-truck bolster having a depressedsurface provided with stops, of the dog adapted to engage or fit betweenthe upper side edges of the bolster and engage said stops, substantiallyas set forth.

5. The combination, with the logging-truck bolster having the depressedsurface provided with stops, of the dog adapted to fit between the upperside edges of the bolster and engage said stops, and the latch engagingsaid dog, substantially as specified.

6. The combination, with the logging-truck bolster, of the chock orblock having the drop-lugs provided with inward upturned lower endsengaging the lower side edges of said bolster, substantially as setforth.

7. The combination, with the logging-truck bolster, of the chock orblock provided with drop-lugs havinginward upturned lower ends, lowerengaging edge, and the latch pivoted to said chock or block also havingpendent studs to said block and adapted to engage said dog,

or projections fitting against the inner sides substantially as setforth.

of said bolster, substantially as specified. In testimony whereof Iaifix my signature 8. The chock-block for10gging-trucks, con in presenceof two Witnesses.

sisting of the base-plate having a chock or WILLIAM HENRY GARLOCK.

block provided with an upper convexor in- WVitnesses:

clined surface, the drop-lugs having inward WV. PARRY SMITH,

upturned lower ends, the dog having the THOMAS T. LITTELL.

